public/subjects/unzipstring

Unzipstring

Instructions

Unzipstring is a simple function that takes a string in of form of a number and an alphabet like (2a) and returns the original string (aa).

• the number before the alphabet should be between 0 to 9
• The one alphabet after each number should be between a to z or A to Z
• it can be two numbers or two alphabets in a row
• if the Input string doesn't respect the format return Invalid Input

Expected Function

func Unzipstring(s string) string {
    //code here
}

Usage

Here is a possible program to test your function:

package main

import (
    "fmt"
    "piscine"
)

func main() {
    fmt.Println(piscine.Unzipstring("6H8a"))
    fmt.Println(piscine.Unzipstring("3p6i1W"))
    fmt.Println(piscine.Unzipstring("2O5u2H0e"))
    fmt.Println(piscine.Unzipstring("2f"))
    fmt.Println(piscine.Unzipstring("2a 6p8f"))
    fmt.Println(piscine.Unzipstring("2p4;7g"))
    fmt.Println(piscine.Unzipstring("2t4dD"))
    fmt.Println(piscine.Unzipstring("82t4D"))

}

And its output :

$ go run .
HHHHHaaaaaaaa
pppiiiiiiWWW
OOuuuuuHH
ff
Invalid Input
Invalid Input
Invalid Input
Invalid Input